John G's posts

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Internet Everywhere - Full Program

From social upheaval and ever-shifting privacy standards to self-driving cars and networked groceries, this eye-opening program provides a stunning glimpse of what’s around the corner for the Internet.

From social upheaval and ever-shifting privacy standards to self-driving cars and networked groceries, this eye-opening program provides a stunning glimpse of what’s around the corner for the Internet.

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lots of interesting vacancies at +Ordnance Survey - including lots my connections would be interested in such as chief geospatial scientist, principal scientist, Senior Geographical Information Architect, product manager for APIs http://lnkd.in/dfanK27

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Fancy working at +Ordnance Survey as manger of 'technology labs' where you'll be leading an efficient prototyping and proof of concept service mainly in the area of web and mobile platforms, and APIs

https://ordnancesurvey.csod.com/ats/careersite/JobDetails.aspx?id=150

https://ordnancesurvey.csod.com/ats/careersite/JobDetails.aspx?id=150

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Just listened to the latest episode of the Infinite Monkey Cage, and was reminded of Benford’s Law. This states:

Benford’s Law, also called the First-Digit Law, refers to the frequency distribution of digits in many (but not all) real-life sources of data. In this distribution, the number 1 occurs as the leading digit about 30% of the time, while larger numbers occur in that position less frequently: 9 as the first digit less than 5% of the time. Benford’s Law also concerns the expected distribution for digits beyond the first, which approach a uniform distribution.

I was curious if that might emerge in geography (or Ordnance Survey data) somehow. Turns out if we look at the areas (in metres squared) of the polygons in the Boundary Line Product (which talks about counties, wards, consistuencies) etc. then we get a pretty good fit. In the table below the first column is the leading digit of the polygon area, the second is the percentage of areas starting with that leading digit and the third column is the value Benford’s Law predicts:

1: 30.6 30.1

2: 15.9 17.6

3: 11.3 12.5

4: 9.8 9.7

5: 8 7.9

6: 7.3 6.7

7: 6.3 5.8

8: 5.6 5.1

9: 4.9 4.6

Benford’s Law, also called the First-Digit Law, refers to the frequency distribution of digits in many (but not all) real-life sources of data. In this distribution, the number 1 occurs as the leading digit about 30% of the time, while larger numbers occur in that position less frequently: 9 as the first digit less than 5% of the time. Benford’s Law also concerns the expected distribution for digits beyond the first, which approach a uniform distribution.

I was curious if that might emerge in geography (or Ordnance Survey data) somehow. Turns out if we look at the areas (in metres squared) of the polygons in the Boundary Line Product (which talks about counties, wards, consistuencies) etc. then we get a pretty good fit. In the table below the first column is the leading digit of the polygon area, the second is the percentage of areas starting with that leading digit and the third column is the value Benford’s Law predicts:

1: 30.6 30.1

2: 15.9 17.6

3: 11.3 12.5

4: 9.8 9.7

5: 8 7.9

6: 7.3 6.7

7: 6.3 5.8

8: 5.6 5.1

9: 4.9 4.6

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Some very quick thoughts on exploring Ordnance Survey linked data in Cayley Graph https://johngoodwin225.wordpress.com/2014/06/29/quick-play-with-cayley-graph-db-and-ordnance-survey-linked-data/

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hmmm DNS oddness occurring - can't access a few sites including Twitter. Anyone else getting this?

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